n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | -2 |
3 | -2 |
4 | 0 |
5 | 6 |
6 | 0 |
7 | 24 |
8 | 0 |
9 | -24 |
10 | 24 |
11 | 0 |
12 | -240 |
13 | 0 |
14 | 120 |
15 | 0 |
16 | -720 |
17 | 0 |
18 | 2400 |
19 | 0 |
20 | -720 |
21 | -720 |
22 | 0 |
23 | 15120 |
24 | 0 |
25 | -25200 |
26 | 0 |
27 | 5040 |
28 | 0 |
29 | 40320 |
30 | 0 |
31 | -282240 |
32 | 0 |
33 | 282240 |
34 | 0 |
35 | -40320 |
36 | 40320 |
37 | 0 |
38 | -1451520 |
39 | 0 |
40 | 5080320 |
41 | 0 |
42 | -3386880 |
43 | 0 |
44 | 362880 |
45 | 0 |
46 | -3628800 |
47 | 0 |
48 | 43545600 |
49 | 0 |
50 | -91445760 |
51 | 0 |
52 | 43545600 |
53 | 0 |
54 | -3628800 |
[1,0,-2,-2,0,6,0,24,0,-24,24,0,-240,0,120,0,-720, 0,2400,0,-720,-720,0,15120,0,-25200,0,5040,0, 40320,0,-282240,0,282240,0,-40320,40320,0, -1451520,0,5080320,0,-3386880,0,362880,0,-3628800, 0,43545600,0,-91445760,0,43545600,0,-3628800] |